CN215703313U

CN215703313U - Slide block positioning mechanism and plastic mold

Info

Publication number: CN215703313U
Application number: CN202121673137.5U
Authority: CN
Inventors: 柏红贵; 魏长海; 孙福刚
Original assignee: Lixun Precision Components Suzhou Co ltd
Current assignee: Lixun Precision Components Suzhou Co ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2022-02-01
Anticipated expiration: 2031-07-22
Also published as: TWM625388U

Abstract

The utility model belongs to the technical field of molds and discloses a sliding block positioning mechanism and a plastic mold. The slider positioning mechanism is used for locking the slider of sliding connection in the spout of mould body in the mould body, slider positioning mechanism includes elastic component, the cell wall of spout with on the slider the two, one is provided with elastic component, another seted up two with elastic component matched with constant head tank, work as when the slider is located the head end and the end of predetermineeing the slip stroke, elastic component can stretch into two respectively the constant head tank will the slider lock in the mould body. The plastic mold comprises the slide block positioning mechanism. The slide block positioning mechanism provided by the utility model cannot cause the slide block to deflect up and down during core pulling operation. The plastic mould provided by the utility model can avoid scratching the formed plastic product during core pulling operation.

Description

Slide block positioning mechanism and plastic mold

Technical Field

The utility model relates to the technical field of molds, in particular to a sliding block positioning mechanism and a plastic mold.

Background

In the plastic mould, set up two strip briquettings usually and form the spout on one of cover half and movable mould, it is provided with the slider (also called loose core) to slide in this spout, the spout can guide the slider to open along a perpendicular to plastic mould, the compound die direction or with open, the linear path that the compound die direction becomes certain angle slides, a guiding hole of slope has generally been seted up on the slider, the oblique guide pillar of fixed mounting on cover half and movable mould another can insert and shift out the guiding hole when plastic mould compound die and die sinking state respectively, thereby order to order about the slider and slide according to foretell linear path, so that the operation of loosing core.

In order to ensure that the position of the sliding block is determined after the plastic mold is opened and closed so as to be accurately aligned and matched with the inclined guide post, a positioning module is arranged at the bottom of the sliding groove generally and mainly comprises a positioning pin and a spring, the spring acts between the positioning pin and the bottom of the sliding groove so that the positioning pin can keep a movement trend of extending upwards and abutting against the sliding block, two positioning grooves are arranged at the bottom of the sliding block, and after the sliding block moves due to the opening and closing actions of the plastic mold, the two positioning grooves can be respectively aligned to the positioning pin so as to allow the positioning pin to move upwards and abut into the positioning grooves, so that the sliding of the sliding block is limited, and the sliding block is locked in the positioning grooves.

However, because the extension elasticity of the spring continuously acts on the bottom surface of the slider, the slider can have a certain inclination angle, and the slider can swing up and down and interfere with a formed plastic product during core pulling operation, so that the plastic product can be scratched occasionally.

Therefore, the above problems need to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a slide block positioning mechanism which can avoid the slide block from swinging up and down when the slide block is positioned.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a slider positioning mechanism for with sliding connection sliding block in the spout of mould body lock in the mould body, slider positioning mechanism includes elastic component, the cell wall of spout with on the slider the two, one is provided with elastic component, another seted up two with elastic component matched with constant head tank, work as when the slider is located the head end and the end of predetermineeing the slip stroke, elastic component can stretch into two respectively the constant head tank will the slider lock in the mould body.

Preferably, the slide block positioning mechanism further comprises a first body, the first body is detachably arranged on the mold body or the slide block, and the two positioning grooves are arranged on the side wall of the first body.

Preferably, the elastic member includes:

the second body is detachably arranged on the die body or the sliding block;

the positioning pin is movably inserted into the second body and can extend out of or retract into the second body; and

and the elastic piece is configured to drive the positioning pin to stop extending out of the second body.

Preferably, the positioning pin comprises a positioning section which can be inserted into the positioning groove, and the end face of the positioning section and the section of the groove bottom face of the positioning groove on the groove bottom plane parallel to the sliding groove are both in a V shape.

Preferably, the included angle of the V-shaped structure ranges from 60 degrees to 120 degrees.

Preferably, the positioning pin further comprises an anti-rotation section which is in sliding fit with the second body, and the shape of the cross section of the anti-rotation section in the axial direction perpendicular to the positioning pin is non-circular.

Preferably, the positioning pin further comprises a limiting section, and the limiting section can abut against the second body when the positioning pin extends into the positioning groove.

Preferably, the elastic part is a pressure spring, the positioning pin further comprises a guide section, the guide section is arranged at one end, deviating from the positioning groove, of the positioning pin, and the pressure spring is partially sleeved on the guide section.

Preferably, the elastic component is disposed on the slider, and the elastic component further includes:

the pin is pinned to the second body and the sliding block along the telescopic direction perpendicular to the positioning pin;

and the at least one screw is in threaded connection with the second body and the sliding block along the telescopic direction perpendicular to the positioning pin.

Another object of the present invention is to provide a plastic mold, which can prevent the plastic product from being scratched during the core pulling operation.

a plastic mold comprises the slide block positioning mechanism.

The utility model has the beneficial effects that:

the slide block positioning mechanism provided by the utility model can accurately position the slide block in the opening and closing processes of the plastic mold by virtue of the insertion and matching of the elastic component arranged on one of the mold body and the slide block and the two positioning grooves arranged on the other of the mold body and the slide block, and can not cause the slide block to swing up and down because the elastic force of the elastic component acts between the side wall of the press block and the side wall of the slide block.

The plastic mould provided by the utility model comprises the slide block positioning mechanism, and can avoid the slide block from swinging up and down when the slide block is positioned, so that a formed plastic product can be prevented from being scratched when core pulling is carried out.

Drawings

FIG. 1 is a schematic diagram of a matching structure of a slide block, a press block and a die body in an embodiment of the utility model;

FIG. 2 is a schematic structural diagram of a slide block positioning mechanism in an embodiment of the present invention when a plastic mold is in an open state;

FIG. 3 is a schematic structural diagram of a slide block positioning mechanism in the plastic mold opening and closing process according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a slide positioning mechanism in an embodiment of the present invention in a mold clamping state of a plastic mold;

FIG. 5 is a schematic structural view of a spring assembly in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a resilient assembly in an embodiment of the present invention;

FIG. 7 is a schematic structural view of an exploded state of the elastic member in the embodiment of the present invention;

fig. 8 is a perspective view of an exploded state of the elastic member in the embodiment of the present invention.

In the figure:

100. a slider; 101. blind holes; 200. a mold body; 201. a template; 202. briquetting; 203. positioning a groove; 204. a trench wall; 300. an elastic component;

1. a second body; 11. mounting holes; 12. a screw hole; 13. a pin hole;

2. positioning pins; 21. a positioning section; 22. an anti-rotation section; 23. a limiting section; 24. a guide section;

3. an elastic member;

4. a pin;

5. a screw;

s, sliding stroke.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The embodiment provides a plastic mould, and this plastic mould includes cover half and movable mould, and cover half and movable mould enclose the configuration jointly and are used for the die cavity of shaping plastic product. When the side wall of the plastic product to be produced is provided with the structure of the hole, the groove or the boss, the plastic product cannot be directly separated from the cavity, and therefore, in the embodiment, part of the molding parts of the fixed mold or the movable mold for molding the structure of the hole, the groove, the boss and the like adopt a movable structure, namely the sliding block capable of sliding relative to the fixed mold or the movable mold. When the mold is closed, the slide block moves to a preset mold closing working position towards the direction of the cavity so as to enable the profile of the cavity to be consistent with the plastic product to be molded; when the mold is opened, the slide block moves to a preset mold opening working position in a direction opposite to the mold cavity so as to be separated from the structures such as the hole, the groove, the boss and the like, and a plastic product is taken out.

As shown in fig. 1, taking the slide 100 as an example of being disposed on a fixed mold, the slide 100 is slidably connected to a mold body 200 of the fixed mold, the mold body 200 includes a mold plate 201 and two strip-shaped pressing blocks 202 fixedly connected to the mold plate 201, a top surface of the mold plate 201 and side walls of the two pressing blocks 202 form a chute extending along a line, the slide 100 is slidably mounted in the chute, that is, the mold plate 201 is slidably engaged with a bottom surface of the slide 100, and the two pressing blocks 202 are slidably engaged with two opposite side walls of the slide 100 along a direction parallel to an extending direction of the chute, and can partially cover the slide 100 to confine the slide 100 in the chute, so that the slide 100 can only slide along a specific linear path, and can be located at the mold closing working position and the mold opening working position.

The sliding motion of the sliding block 100 may be implemented based on the opening and closing motion processes of the fixed mold and the movable mold, and specifically, may be implemented by an inclined guide pillar core-pulling mechanism, an inclined sliding block 100 core-pulling mechanism, or a rack-and-pinion core-pulling mechanism, which may be implemented by the prior art and will not be described herein.

It should be noted that, in order to be suitable for the slider 100 to be able to accurately cooperate with the corresponding core-pulling mechanism when the plastic mold is opened and closed, it needs to be accurately positioned at the mold-closing operation position and the mold-opening operation position when the mold is opened and closed. Moreover, in order to prevent the slide block 100 from sliding from the mold closing position to the mold opening position during the mold opening process, i.e., from swinging up and down during the core pulling operation to scratch the surface of the plastic product, a slide block positioning mechanism is further provided in the present embodiment, which will be described in detail below.

Referring to fig. 2, fig. 3 and fig. 4, the slide block positioning mechanism includes an elastic component 300, a pressing block 202 for forming a sliding slot has two positioning slots 203 matching with the elastic component 300 on a slot wall 204 of the sliding slot, and the slide block 100 is provided with the elastic component 300. When the slider 100 is located at the head end (i.e., one of the mold closing operation position and the mold opening operation position) and the tail end (i.e., the other of the mold closing operation position and the mold opening operation position) of the preset sliding stroke S (i.e., the stroke of the slider 100 sliding between the mold closing operation position and the mold opening operation position), the elastic members 300 can respectively extend into the two positioning grooves 203 under the action of their own elastic forces, thereby locking the slider 100 to the mold body 200.

Taking the mold closing motion as an example, the slider 100 slides from the position shown in fig. 2 to the position shown in fig. 4, the slider 100 overcomes the elastic force of the elastic component 300 under the driving force of the core pulling mechanism, so that the elastic component 300 contracts and moves out of one of the positioning slots 203 to the state shown in fig. 3, the elastic component 300 continuously presses against the slot wall 204 of the sliding slot under the action of the elastic force of the elastic component 300, so that the sliding process of the slider 100 is damped smoothly, and when the mold closing motion is completed, the elastic component 300 is directly opposite to the other positioning slot 203 and is inserted into the positioning slot 203, so that the slider 100 is locked to the mold body 200 again.

By means of the structure, the sliding block 100 can be accurately positioned in the opening and closing processes of the plastic mold, and the elastic force of the elastic component 300 acts between the side wall of the pressing block 202 and the side wall of the sliding block 100, so that the sliding block 100 cannot deflect up and down, and the molded plastic product cannot be scratched when the sliding block 100 slides from the mold closing working position to the mold opening working position.

In this embodiment, the slide block positioning mechanism may be provided in two or more numbers, that is, fig. 2, 3 and 4 only show the slide block positioning mechanism provided between the slide block 100 and one of the pressing blocks 202. In this embodiment, a slider positioning mechanism may also be disposed between the slider 100 and the other press block 202, and the two slider positioning mechanisms may be symmetrically disposed to cooperate with each other, so that the slider 100 is more accurately positioned and has a more stable posture.

It is understood that in other alternative embodiments, the positioning groove 203 and the elastic member 300 may be disposed on the slide 100 and the mold body 200 in a reversed position, for example, the positioning groove 203 is disposed on the side wall of the slide 100, and the elastic member 300 is disposed on the pressing block 202. While the following descriptions of the structures associated with the positioning groove 203 and the resilient member 300 are provided by way of example only for the positioning groove 203 and the resilient member 300 respectively disposed on the mold body 200 and the slide 100, those skilled in the art will appreciate that in other embodiments for exchanging the positions of the positioning groove 203 and the resilient member 300, the following descriptions of the structures associated with the positioning groove 203 and the resilient member 300 may be exchanged accordingly.

In addition, in the present embodiment, the pressing block 202 is not limited to be of an integral or separate structure, and the portion of the pressing block 202 where the two positioning grooves 203 are provided is set as a first body, and the first body may be regarded as the whole pressing block 202 or may be regarded as a part of the pressing block 202. For adaptation in different slider 100, plastic product etc. can set up this first body into detachably and connect on mould body 200 to through the different first body of replacement installation, realize two constant head tanks 203 that have different intervals, size on the plastic mould. Accordingly, the elastic component 300 may include a second body 1, and the second body 1 is detachably mounted on the slide 100, so that the second body can be replaced with a specification matched with the first body mounted on the mold body 200, thereby implementing the general function of the multi-plastic mold of the slide positioning mechanism.

Referring now to fig. 5-8, the structure of the resilient element 300 will be described in detail.

Referring to fig. 5 and 6, in addition to the second body 1, the elastic assembly 300 further includes a positioning pin 2 and an elastic element 3. The positioning pin 2 is movably inserted into the mounting hole 11 formed in the second body 1 in a penetrating manner, so that one end of the positioning pin, which is used for being matched with the positioning groove 203, can extend out of or be retracted into the second body 1. The elastic member 3 is configured to drive the positioning pin 2 to stop protruding out of the second body 1, that is, when an external force acts on the positioning pin 2, an end of the positioning pin 2, which is engaged with the positioning groove 203, can protrude out of the second body 1.

Specifically, as shown in fig. 6, the elastic member 3 may be a compression spring, one end of which is inserted into the blind hole 101 opposite to the mounting hole 11, and the other end of which abuts against the positioning pin 2, so that an urging force toward the pressing block 202 can be provided to the positioning pin 2. In other embodiments, the elastic member 3 may also be a spring plate, a gas spring, or the like.

As shown in fig. 7 and 8, the portion of the positioning pin 2 that fits into the positioning groove 203, i.e., the end portion that can be inserted into the positioning groove 203, is defined as a positioning section 21, and the cross sections of the end surface of the positioning section 21 and the groove bottom surface of the positioning groove 203 on the plane parallel to the groove bottom of the chute are preferably V-shaped, so that when the positioning pin 2 is driven by the core-pulling mechanism to move out of the positioning groove 203, the end surface of the positioning section 21 can slide out smoothly along the sloping groove wall 204 of the V-shaped chute. The included angle of the V-shape is preferably 60-120 degrees.

The positioning pin 2 further comprises an anti-rotation section 22 in sliding fit with the second body 1, the shape of the cross section of the anti-rotation section 22 in the axial direction perpendicular to the positioning pin 2 is non-circular, correspondingly, the mounting hole 11 is used for accommodating part of the anti-rotation section 22 which is non-circular and is matched with the anti-rotation section 22, so that the positioning pin 2 is limited to be capable of extending and retracting along the axial direction and cannot rotate around the axial direction, and the positioning section 21 is ensured to be right opposite to the V-shaped sliding groove.

For preventing that locating pin 2 pops out mounting hole 11 under the suppression of elastic component 3, locating pin 2 still can include spacing section 23, spacing section 23 can stretch into locating groove 203 when locating pin 2 with second body 1 butt. For example, the limiting section 23 may have a larger outer diameter than other parts of the positioning pin 2, and accordingly, the mounting hole 11 may be provided with a stepped hole, one end of which having a larger bore diameter faces away from the pressing block 202 and is used for accommodating the limiting section 23 of the positioning pin 2.

The positioning pin 2 can further comprise a guide section 24, the guide section 24 can be arranged at one end of the positioning pin 2 departing from the positioning groove 203, and the pressure spring part is sleeved on the guide section 24, so that the guide section 24 can be used for guiding, and deflection in the telescopic process is avoided.

In addition, as shown in fig. 6 and 7, in order to ensure that the second body 1 is securely mounted on the slider 100, in the present embodiment, the elastic assembly 300 further includes at least one pin 4 and at least one screw 5, the pin 4 is pinned to the second body 1 and the slider 100 in a direction perpendicular to the telescopic direction of the dowel pin 2, and the screw 5 is screwed to the second body 1 and the slider 100 in the direction perpendicular to the telescopic direction of the dowel pin 2.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a slider positioning mechanism for with slider (100) of sliding connection in the spout of mould body (200) lock in mould body (200), its characterized in that, slider positioning mechanism includes elastic component (300), cell wall (204) of spout with on the two of slider (100), one is provided with elastic component (300), another seted up two with elastic component (300) matched with constant head tank (203), work as slider (100) are located the head end and the end of predetermineeing the slip stroke, elastic component (300) can stretch into two respectively constant head tank (203), will slider (100) lock in mould body (200).

2. The slide positioning mechanism according to claim 1, further comprising a first body detachably provided on the mold body (200) or the slide (100), two positioning grooves (203) being provided on a side wall of the first body.

3. The slide positioning mechanism of claim 1, wherein the resilient assembly (300) comprises:

the second body (1) is detachably arranged on the die body (200) or the sliding block (100);

the positioning pin (2) is movably inserted into the second body (1), and the positioning pin (2) can extend out of or be retracted into the second body (1); and

an elastic member (3) configured to drive the positioning pin (2) to stop protruding out of the second body (1).

4. A slide positioning mechanism according to claim 3, characterized in that the positioning pin (2) comprises a positioning section (21) insertable into the positioning slot (203), the end face of the positioning section (21) and the slot bottom face of the positioning slot (203) each having a V-shaped cross-section in a plane parallel to the slot bottom of the slide slot.

5. The slide positioning mechanism of claim 4 wherein the included angle of the V-shape is 60-120 degrees.

6. A slider positioning mechanism according to claim 3, characterised in that the positioning pin (2) further comprises an anti-rotation section (22) in sliding engagement with the second body (1), the anti-rotation section (22) having a non-circular shape in cross section perpendicular to the axial direction of the positioning pin (2).

7. A slider positioning mechanism according to claim 3, characterized in that the positioning pin (2) further comprises a stopper section (23), the stopper section (23) being adapted to abut the second body (1) when the positioning pin (2) extends into the positioning slot (203).

8. A slide positioning mechanism according to claim 3, wherein the elastic member (3) is a compression spring, the positioning pin (2) further comprises a guiding section (24), the guiding section (24) is disposed at an end of the positioning pin (2) away from the positioning slot (203), and the compression spring is partially sleeved on the guiding section (24).

9. The slide positioning mechanism of claim 3, wherein the resilient assembly (300) is disposed on the slide (100), the resilient assembly (300) further comprising:

at least one pin (4) pinned to the second body (1) and to the slider (100) along a direction perpendicular to the extension and retraction direction of the dowel pin (2);

and the at least one screw (5) is in threaded connection with the second body (1) and the sliding block (100) along the telescopic direction perpendicular to the positioning pin (2).

10. A plastic mold comprising the slide positioning mechanism of any one of claims 1-9.